EP1447530A4 - Decompressor for 4-stroke cycle internal combustion engines - Google Patents

Decompressor for 4-stroke cycle internal combustion engines

Info

Publication number
EP1447530A4
EP1447530A4 EP02700715A EP02700715A EP1447530A4 EP 1447530 A4 EP1447530 A4 EP 1447530A4 EP 02700715 A EP02700715 A EP 02700715A EP 02700715 A EP02700715 A EP 02700715A EP 1447530 A4 EP1447530 A4 EP 1447530A4
Authority
EP
European Patent Office
Prior art keywords
cam
decompression
exhaust
decompression cam
decompressor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02700715A
Other languages
German (de)
French (fr)
Other versions
EP1447530B1 (en
EP1447530A1 (en
Inventor
Atsushi Ogasawara
Seiji Onozawa
Kuniaki Ikui
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Publication of EP1447530A1 publication Critical patent/EP1447530A1/en
Publication of EP1447530A4 publication Critical patent/EP1447530A4/en
Application granted granted Critical
Publication of EP1447530B1 publication Critical patent/EP1447530B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N19/00—Starting aids for combustion engines, not otherwise provided for
    • F02N19/004—Aiding engine start by using decompression means or variable valve actuation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/022—Chain drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/08—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for decompression, e.g. during starting; for changing compression ratio
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/08—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for decompression, e.g. during starting; for changing compression ratio
    • F01L13/085—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for decompression, e.g. during starting; for changing compression ratio the valve-gear having an auxiliary cam protruding from the main cam profile
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2301/00—Using particular materials

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve Device For Special Equipments (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

A decompressor simple in construction, small in size and low in cost for a 4-stroke cycle internal combustion engine (1) including suction and exhaust valves (9, 10) driven by suction and exhaust cams (27, 28) integral with a cam shaft (13), the decompressor comprising a decompression cam (38) rotatably fitted on the cam shaft (13), a one-way clutch (29) that is fitted on the cam shaft (13) adjacent the decompression cam (38) so as to be able to transmit reverse rotation torque to the decompression cam (38) only during the reverse rotation of the cam shaft (13), a torque limiter (40) interposed between the decompression cam (38) and one-way clutch (29), decompression stops (42, 43) that are disposed in a fixed portion and that are adapted to engage an engaging portion (41) formed in the decompression cam (38) to lock the decompression cam (38) at two places in the directions of forward and backward rotation of the decompression cam (38), the lift of the cam portion (38a) of the decompression cam (38) being set higher than the base circle of the exhaust cam (28) and lower than the maximum lift of the cam portion (28a) of the exhaust cam (28), it being arranged that an exhaust valve (10) will not be opened by the decompression cam according to the locked state of the engaging portion engaging the decompression cam stop (43) during forward rotation of the cam shaft (13).
EP02700715A 2001-03-26 2002-02-22 Decompressor for 4-stroke cycle internal combustion engines Expired - Lifetime EP1447530B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2001086780 2001-03-26
JP2001086780A JP4338333B2 (en) 2001-03-26 2001-03-26 Decompression device for 4-stroke cycle internal combustion engine
PCT/JP2002/001616 WO2002077422A1 (en) 2001-03-26 2002-02-22 Decompressor for 4-stroke cycle internal combustion engines

Publications (3)

Publication Number Publication Date
EP1447530A1 EP1447530A1 (en) 2004-08-18
EP1447530A4 true EP1447530A4 (en) 2008-04-09
EP1447530B1 EP1447530B1 (en) 2008-12-24

Family

ID=18942110

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02700715A Expired - Lifetime EP1447530B1 (en) 2001-03-26 2002-02-22 Decompressor for 4-stroke cycle internal combustion engines

Country Status (13)

Country Link
EP (1) EP1447530B1 (en)
JP (1) JP4338333B2 (en)
KR (1) KR100813746B1 (en)
CN (1) CN1263943C (en)
AR (1) AR033203A1 (en)
BR (1) BR0204676B1 (en)
DE (1) DE60230541D1 (en)
ES (1) ES2317988T3 (en)
IL (1) IL152766A0 (en)
MY (1) MY135269A (en)
TR (1) TR200202556T1 (en)
TW (1) TW515863B (en)
WO (1) WO2002077422A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4346262B2 (en) * 2001-07-25 2009-10-21 本田技研工業株式会社 Method and apparatus for starting internal combustion engine
JP2005143169A (en) 2003-11-05 2005-06-02 Yamaha Motor Co Ltd Electric vehicle
JP4667090B2 (en) 2005-03-16 2011-04-06 ヤマハ発動機株式会社 Hybrid vehicle drive unit, hybrid vehicle and motorcycle
JP4317536B2 (en) 2005-06-23 2009-08-19 ヤマハ発動機株式会社 Hybrid motorcycle drive device and hybrid motorcycle equipped with the same
JP4317535B2 (en) * 2005-06-23 2009-08-19 ヤマハ発動機株式会社 Hybrid motorcycle drive device and hybrid motorcycle
JP4674722B2 (en) 2006-03-17 2011-04-20 国立大学法人静岡大学 Electric vehicle power supply device
JP5024811B2 (en) 2006-03-17 2012-09-12 国立大学法人静岡大学 Electric vehicle power supply device
KR100856984B1 (en) * 2007-02-14 2008-09-04 혼다 기켄 고교 가부시키가이샤 Decompression device of internal combustion engine
JP4759534B2 (en) * 2007-04-27 2011-08-31 本田技研工業株式会社 INTERNAL COMBUSTION ENGINE WITH DECOMP DEVICE AND MOTORCYCLE MOUNTED WITH THE INTERNAL COMBUSTION ENGINE
JP4777955B2 (en) * 2007-10-03 2011-09-21 本田技研工業株式会社 Engine decompression device
AU2009352419B2 (en) * 2009-09-14 2013-09-12 Honda Motor Co., Ltd. Valve operating system for internal combustion engine
TWI451031B (en) * 2010-05-12 2014-09-01 Sanyang Industry Co Ltd Engine decompression mechanism
JP5826414B1 (en) * 2015-01-14 2015-12-02 ヤマハ発動機株式会社 Engine system and saddle riding type vehicle
CN106401832B (en) * 2015-07-27 2020-05-19 三阳工业股份有限公司 Method for controlling engine starting of starting and power generating device
JP6608674B2 (en) * 2015-11-02 2019-11-20 株式会社三共製作所 Roller gear cam mechanism

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2157770A (en) * 1984-03-26 1985-10-30 Honda Motor Co Ltd Decompression device for internal combustion engine
GB2190142A (en) * 1986-05-09 1987-11-11 Honda Motor Co Ltd Automatic decompression device in engine valve gear
JPS63162911A (en) * 1986-12-25 1988-07-06 Honda Motor Co Ltd Autodecompression device for engine
JPS6444307U (en) * 1987-09-11 1989-03-16
EP1046813A1 (en) * 1999-04-23 2000-10-25 Honda Giken Kogyo Kabushiki Kaisha Engine starter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2157770A (en) * 1984-03-26 1985-10-30 Honda Motor Co Ltd Decompression device for internal combustion engine
GB2190142A (en) * 1986-05-09 1987-11-11 Honda Motor Co Ltd Automatic decompression device in engine valve gear
JPS62261610A (en) * 1986-05-09 1987-11-13 Honda Motor Co Ltd Automatic decompression device for engine
JPS63162911A (en) * 1986-12-25 1988-07-06 Honda Motor Co Ltd Autodecompression device for engine
JPS6444307U (en) * 1987-09-11 1989-03-16
EP1046813A1 (en) * 1999-04-23 2000-10-25 Honda Giken Kogyo Kabushiki Kaisha Engine starter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO02077422A1 *

Also Published As

Publication number Publication date
AR033203A1 (en) 2003-12-10
MY135269A (en) 2008-03-31
DE60230541D1 (en) 2009-02-05
KR20030041864A (en) 2003-05-27
JP2002285812A (en) 2002-10-03
KR100813746B1 (en) 2008-03-13
BR0204676A (en) 2003-04-08
BR0204676B1 (en) 2011-01-25
EP1447530B1 (en) 2008-12-24
ES2317988T3 (en) 2009-05-01
WO2002077422A1 (en) 2002-10-03
IL152766A0 (en) 2003-06-24
CN1460146A (en) 2003-12-03
JP4338333B2 (en) 2009-10-07
TW515863B (en) 2003-01-01
TR200202556T1 (en) 2003-05-21
CN1263943C (en) 2006-07-12
EP1447530A1 (en) 2004-08-18

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